小程序源码 学习相关 expandableList扩展列表.rar

package com.test; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import android.app.ExpandableListActivity; import android.os.Bundle; import android.widget.ExpandableListAdapter; import android.widget.SimpleExpandableListAdapter; public class expandableList extends ExpandableListActivity { private static final String SHELF = "SHELF"; private static final String BOOK = "BOOK"; private ExpandableListAdapter mAdapter; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); List<Map<String, String>> groupData = new ArrayList<Map<String, String>>(); List<List<Map<String, String>>> childData = new ArrayList<List<Map<String, String>>>(); for (int i = 1; i < 4; i++) { Map<String, String> curGroupMap = new HashMap<String, String>(); groupData.add(curGroupMap); curGroupMap.put(SHELF, "Bookshelf-" + i); List<Map<String, String>> children = new ArrayList<Map<String, String>>(); for (int j = 1; j < 3; j++) { Map<String, String> curChildMap = new HashMap<String, String>(); children.add(curChildMap); curChildMap.put(SHELF, "Book- " + j); } childData.add(children); } // Set up our adapter mAdapter = new SimpleExpandableListAdapter( this, groupData, android.R.layout.simple_expandable_list_item_1, new String[] { SHELF, BOOK}, new int[] { android.R.id.text1, android.R.id.text2 }, childData, android.R.layout.simple_expandable_list_item_2, new String[] { SHELF, BOOK}, new int[] { android.R.id.text1, android.R.id.text2 } ); setListAdapter(mAdapter); } }